Emergency-tire for automobiles.



S. DAVIDSON.

EMERGENCY TIRE FOR AUTOMOBILES.

APPLICATION FILED JULY 10, 1911.

Patented Aug. 19, 1913.

2 SHEETS-SHEET 1.

S. DAVIDSON.

EMERGENCY TIRE FOR AUTOMOBILES. APPLICATION FILED JULY 10,1911.

1,070,670. Patented Aug. 19, 1913.

2 SHEETS-SHEET 2.

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AillENT 1 FFIQE.

SAMUEL DAVIDSON, OF INDIANAPOLIS, INDIANA.

EMERGENCY-TIRE FOR AUTOMOBILES.

novacvo.

Application filed July 10, 1911.

To aZZ whom it may concern:

Be it known that I, SAMUEL DAVIDSON, a citizen of the United States,residing at Indianapolis, in the county of Marion and State of Indiana,have invented certain new and useful Improvements in Emergency Tires forAutomobiles, of which the following is a specification.

In the use, in an emergency tire for automobiles, of any suitablenon-pneumatic tire, such as a regulation solid or cushion rubber tire,or metal tire of suflicient tread, it is obviously necessary tointerpose some suitable means between the wheel rim and the emergencytread portion whereby the tread portion is properly mounted upon thewheel rim, which latter is adapted for the recep tion of a pneumatictire.

It is the object of my present invention to improve generally uponemergency tires for automobiles; also to improve upon the interposedmeans whereby the emergency tread portion is supported upon the wheelrim, with the special view of making the emergency tire when appliedrigid,-strong, and durable so as to be thoroughly capable ofwithstanding the tremendous stresses to which such structures aresubjected, and with the further special view of makin such structuresimple and of a minimum number of parts; also to improve specially uponthe means whereby a standard steel channel with standard or suitableresilient tread are supportable firmly and rigidly upon the face of thewheel rim between the flanges thereof.

My invention comprises the special kind of bracket hereinafter set outfor supporting the tread member upon the wheel rim, the combination ofthe steel channel with the series of special kind of brackets, and theparts, improvements, and combinations hereinafter set forth and claimed.

In the drawings accompanying and forming part of this specification andin the description of the drawings, I have shown my invention in itspreferred form, with several modifications, and have explained what Ideem to be the best mode of applying the principles thereof; but it isto be understood that, within the scope of the appended claims, Icontemplate changes in form, proportions, and materials, thetransposition of parts, and the substitution of equivalent members,without departing from the spirit of my invention.

In Patent No. 1,052,801, granted tome Specification of Letters Patent.

Patented Au 19,1913.

Serial No. 637,669.

February 11, 1913, and in application Serial No. 727,479, filed by meOctober 24, 1912, both for improvements in emergency tires, I have shownbut not claimed certain of the features herein shown and claimed.

Figure l is a side elevation of a wheel rim on which is mounted anemergency tire made in accordance with the principles of my invention.Fig. 2 is. a longitudinal central sectional elevation of a portion ofthe same in the region of the valve stem hole. Fig. 3 shows, enlarged,transverse sections of the wheel rim and steel channel with an elevationof one of the simplest form of brackets which constitute the means forsupporting the steel channel upon the wheel rim. Fig. t is a top or planview of such steel channel and bracket. Fig. 5 is a transverse sectionof the steel channel, the wheel rim, and the felly across the valve stemhole, with a sectional elevation of a special form of bracket (shownpartly in elevation) which is secured to the rim and felly by means of abolt, also shown in elevation, extending through the valve stem hole, toprevent longitudinal movement of the emergency tire upon the rim; thisView also shows in sect-ion a wedge used with this bracket and bolt fortightening the tire upon the rim. Fig. 6 is a top or plan view of thesame bracket and wedge. Fig. 7 is a sectional elevation on a planeextending centrally and longitudinally of the rim, of a portion of thesame parts. Fig. 8 shows another form of bracket, partly in section andpartly in elevation, together with transverse sections of the steelchannel and the wheel rim, and a bar which prevents the brackets fromturning. Fig. 9 is an end elevation of the bolt whereby the two forms ofbrackets last described are swiveled to the steel channel. Fig. 10 is afragmentary plan or top view of the last-described bracket (shown inFig. 8), the steel channel, and the wheel rim, with a dotted outline ofa secondarv position of that bracket. Figs. 11 and 12 are sideelevations of parts of the wheel rim and emergency tire, together withmodified forms of locking devices or rings for preventing the swiveledbrackets from turning. Figs. 13 and 14 are enlarged transverse sectionsof the same locking rings respectively. Fig. 15 shows a furthermodification of the bracket, partly in section and partly in elevation,with a transverse section of the steel channel and transverse sectionsof plates or rings adapted to wholly inclose the space between the steelchannel and the wheel rim, the method of attaching the bracket to thesteel channel here shown being a detachable means to adapt the tire forapplication to a wheel rim having integral or non-removable flanges,such as a plain.

clencher rim.

Similar reference characters indicate like or corresponding partsthroughout the sev eral views.

15 represents any ordinary wheel rim,here shown as of thequick-detachable type and having clencher flanges 16 and 17 andretaining ring 18.

19 is the tread, which may be of any sultable type or material,preferably rubber, either solid or cushion, mounted in the steel channel2O. I

21 is a bracket rigidly riveted to the inner side of the steel channelby means of rivets and formed with a flat bearing against said channeland with two legs 22, 22* which extend radially inwardly from thechannel, spreading apart from each other from the channel inwardly tohave a brace-like effect, each leg terminating at its inner end with alug 24 which is formed to be seated against the wheel rim and againstthe respective flanges. Preferably the brackets are made of steel,malleable iron, drop forgings, or otherwise so that although they areradially perfectly rigid, yet they may be slightly sprung toward eachother for the purpose hereinafter explained. It is a feature of myinvention that these brackets are radially inexpansible, radially rigid,and each is made of a single integral piece of metal, in order that thispart of my emergency tire shall be of utmost strength, simplicity,durability, and freedom from movable or complicated parts. I considerthis of the greatest necessity onaccount of the stresses to which theseparts are subjected. I use any suitable number of these bracketsarranged equidistantly around the steel channel, in order to support thesteel channel and tread upon the wheel rim.

To facilitate applying the emergency tire to, and removing it from, thewheel rim of the quiclcdetachable type, I substitute for the bracketsjust described, which are rigidly or non-rotataloly secured to the steelchannel, three brackets that are swiveled t0 the channel and which arecapable of being turnedlengthwise of the rim. Referring first to Figs.8, 9, and 10: This bracket is similar in general shape to the bracketfirst described but has a crossbar 26 at its base. It is secured to thechannel by means of a bolt 27, nut 81, and lock-washer 32. The bolt issquared, 28, where it passes through the channel and is swaged therein,is round where it passes through the bracket, as

shown at 29, and its end is threaded, as shown at 30, for the receptionof the nut.

.ring and near flange.

In attaching the tire to and removing it from the rim, this bracket isturned lengthwise of the rim, as indicated by the dotted from the centerof the bolt, to permit such turning with relation to the flanges of therim.

Referring to Figs. 5, 6, and 7: This bracket is substantially similar tothe one last described, but with the following exceptions: The legs arepreferably wider apart so as to engage against the inner edges of thein-turned clencher flanges, and the lugs are omitted. There is a holethrough the cross-bar to receive a bolt 11. which extends through thevalve stem hole through the rim and fell'y 42 and is held firmly bymeans of a nut 61 and lock-washer 43. In connection with this bracket Iuse a wedge 38 between the cross-bar and the rim and having an upturnedflange 39 fitting between the rim flanges and against the nut. The wedgehas ahole so to receive the bolt, this hole being large and elongated soas to make its finding easy.

In connection with the series of brackets herein. first described (shownin Figs. 3 and t), I use only a limited number of the swiveled brackets.I use one of the lastdescribed brackets (shown in Figs. 5, 6, and 7),which may be termed the key-bracket, it being adapted for positiveattachment to -the rim to prevent creeping, and two of the bracketsshown in Figs. 8, 9, and 10, one on each side of the key-bracket. Thepurpose of using the three swiveled brackets in association with thenon-swiveled brackets wvill be understood from an explanation of theoperation of my emergency tire.

The rim is made ready to receive the emergency tire by removal of theretaining The emergency tire is. made ready for mounting upon the rim byturning the three swiveled brackets lengthwise of the tire, the wedgeand the bolt 4.1 being removed and loose. The emergency tire is thenslipped onto the rim in such position that the bolt hole through thebase cross-bar of the key-bracket regis ters with the valve stem hole.The removed rim-flange is then placed in position on the rim, and theretaining ring is then seated; but in applying the retaining ring itwill. be understood that the flange of the rim is forced slightly towardthe opposite side of the rim. To permit this slight compression,

the legs are so constructed that, as hereinbefore explained, they may beslightly sprung together. At the place where the retaining ring issplit, which is usually at the valve-stem hole, and where the start mustbe made in putting it in place, more inward movement of the near flangeis required; and it is to meet this requirement that the three bracketsare swiveled in this region. Thus, when these swiveled brackets areturned lengthwise of the rim, the near flange may be pressed inwardlywithout interference from the brackets, thus facilitating application ofthe ring at its starting and stopping points. WVhen once started,however, it is an easy matter to force the ring into its seat all theway around. When the ring is seated, the swiveled brackets are turnedcross-wise of the rim, the wedge is forced under the keybracket (ifneeded), and the bolt is firmly secured. The absence of the lugs on thekey-bracket permits radial movement induced by inserting the tighteningwedge. In order to prevent the swiveled brackets from accidentallyturning from their proper cross-wise position, I provide a shortsegmental band which is secured to the sides of the three brackets bymeans of bolts 46, nuts 1", and lock-washers 48, said bolts passingthrough holes 14: in the legs of the brackets; and preferably the bolts27 have respectively right and left threading, two of one and one of theother.

lVhile the foregoing arrangement is preferable in many cases, I alsocontemplate the use of the tire with all brackets swiveled. In suchcase, I prefer to make some turn oppositely to the others, say halfrights and half lefts. To prevent accidental turning from propercross-wise position, I use a band 50 (Figs. 11 and 13) whose inner edgeis inturned and notched, as shown at 51, to fit over the severalbrackets, the band being secured by several bolts 46, the ends 62overlapping; or I may use a band 52 (Figs. 12 and 14;), with a pin 90adapted to seat in each hole in each bracket and secured by a series ofbolts 16.

Where my emergency tire is to be used upon a rim with integral flanges,as a plain clencher rim, the form shown in Fig. 15 may be used. Here thebrackets, or any number occupying approximately one-half or more of thetire, are each secured to the channel by means of a bolt 60 engaging inthe threaded boss 71 in the channel and locked by lock-washer 72. Theother brackets may be of the permanently attached swiveled type, or allmay be of the detachable type. If partly of the permanently attachedtype, the tire is applied to the rim, the detachable brackets areapplied separately, and the bolts applied. Also in Fig. 14 I have shownrings 80 on each side of the brackets of sufficient radial width toclose the gap between the channel and the rim, and secured in place bymeans of bolts 81.

What I claim is:

1. In an emergency tire, the combination of a steel channel, a treadmember mounted thereon, and a series of inwardly extending radiallyrigid and radially inexpansible brackets, each bracket being formed atits outer end to bear against the inner side of the steel channel andbeing rigidly secured to said channel, each bracket having two inwardlyextending diverging legs, each bracket being formed at its inner end tobear against a wheel rim between the flanges thereof, and each bracketcomprising a single integral piece of metal.

2. In an emergency tire, the combination of a steel channel, a treadmember mounted thereon, and a series of inwardly extending radiallyrigid and radially inexpansible brackets secured to said channel, eachbracket being formed at its outer end to bear against said channel andat its inner end to bear against the rim between the flanges thereof,and each bracket having two inwardly extending diverging integral legs.

3. In an emergency tire, the combination of a steel channel and a seriesof inwardly extending radially rigid and radially inexpansible bracketsrigidly secured thereto, each bracket being formed at its outer end tobear against the channel and at its inner end to bear against a wheelrim between the flanges thereof.

a. In an emergency tire adapted for use in conjunction with wheel rimshaving side flanges, the combination of an outer rim and a series ofinwardly extending brackets secured to said outer rim, each bracketbeing inexpansible radially and being formed at its outer end to bearagainst said outer rim and at its inner end to bear against the wheelrim between the flanges thereof.

In testimony whereof I have affixed my signature in presence of twowitnesses.

SAMUEL DAVIDSON.

Witnesses:

JAMEs DAVIDSON,

J. M. STARK.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

